"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
4 Of colours6 Of coloursOf coloursThe Newton Project Knowledge Graph2020-10-08Journal
7 If a pore be too much straitned as at c e, so that the globulus must part the matter towards b from the matter towards d so that ther be no subtil matter on either side towards c or e, when some of that narrow pore is behind it, there will be noe matter on either side it to presse it towards its hinder parts so much as it is pressed before likewise it is forced to croude before it all the matter in the pore so that its motion must needes be diminished if it had force to passe through but if it had not force enough to part the matter & get through then it would be reflected back without looseing any considerable parts of its motion as rays passing out of glass, into the aire when their force is too much diminished by their obliquity they are reflected by the aire without any loss of their motion & bodys full of such straight passages in its pores must be of darke colours as blew glass whose pores may be straightned by loose & too greate particles of the tincture lying within them. But if this pore were something bigger so as to let the slowly moved ○s passe through with losse of most or all theire motion, but letting the swift ones scape freelier then the colour will be red, yellow &c: as in glasse it may be whose poores are full of smaller particles of the tincture than those pores of blew glasse are,